---
id: CVE-2026-55228
aliases:
  - GHSA-2q2q-jr9g-v9rf
  - PYSEC-2026-3942
title: >-
  Weblate has IDOR in GroupViewSet that allows authenticated project manager to
  gain unauthorized read access to any private project
summary: >-
  Weblate has IDOR in GroupViewSet that allows authenticated project manager to
  gain unauthorized read access to any private project
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
vendor: weblate
product: weblate
ecosystem: pip
affected:
  - weblate < 2026.7
patched:
  - weblate 2026.7
published: '2026-08-28'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T12:26:08.096875370Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-2q2q-jr9g-v9rf'
references:
  - url: >-
      https://github.com/WeblateOrg/weblate/security/advisories/GHSA-2q2q-jr9g-v9rf
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55228'
  - url: 'https://github.com/WeblateOrg/weblate/pull/19970'
  - url: >-
      https://github.com/WeblateOrg/weblate/commit/19babc99b05f2cc299b5090f90f79d8181f25d79
  - url: 'https://github.com/WeblateOrg/weblate'
  - url: 'https://pypi.org/project/weblate'
  - url: 'https://github.com/advisories/GHSA-2q2q-jr9g-v9rf'
tags:
  - osv
  - pip
  - nvd
  - ghsa
epss: 0.00448
epssPercentile: 0.36217
cwe:
  - CWE-639
ingestedAt: '2026-08-28T19:24:19.109Z'
---

## Overview

### Impact
The API did not properly handle project- and workspace-scoped teams and allowed setting invalid configurations, including granting access to projects the user has no access to.

### Patches
* https://github.com/WeblateOrg/weblate/pull/19970


### References

Parts of this issue were independently reported by four reporters:
 * @H3xV0rT3x via GitHub
 * [imhego](https://hackerone.com/imhego) via HackerOne
 * [v01demort](https://hackerone.com/v01demort) via HackerOne
 * [b4nder](https://hackerone.com/b4nder) via HackerOne

## Affected packages

- `weblate < 2026.7`

## Remediation

Upgrade to a patched release:

- `weblate 2026.7`